visual acuity

Definition of VISUAL ACUITY

: the relative ability of the visual organ to resolve detail that is usually expressed as the reciprocal of the minimum angular separation in minutes of two lines just resolvable as separate and that forms in the average human eye an angle of one minute

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First Known Use of VISUAL ACUITY

1889

Medical Dictionary

visual acuity

noun

Medical Definition of VISUAL ACUITY

: the relative ability of the visual organ to resolve detail that is usually expressed as the reciprocal of the minimum angular separation in minutes of two lines just resolvable as separate and that forms in the average human eye an angle of one minute—compare minimum separable, minimum visible